Introduction:
As an IT support professional or Linux enthusiast, understanding how to install Docker on a Linux system is essential for modern software development and deployment processes. Docker provides a platform for developing, shipping, and running applications using containerization technology. In this step-by-step guide, we will walk you through the process of installing Docker on a Linux system.
Prerequisites:
- A Linux system with sudo privileges
- Access to the internet to download Docker
Downloading Docker:
The first step is to download the Docker package from the official Docker repository. Open a terminal window and run the following command to update the package index:
sudo apt update
Once the package index is updated, you can install the necessary dependencies to allow apt to use a repository over HTTPS:
sudo apt install apt-transport-https ca-certificates curl software-properties-common
Next, add the Docker GPG key to ensure the integrity of the packages being downloaded:
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
After adding the key, add the Docker repository to your system:
sudo add-apt-repository 'deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable'
Finally, update the package index again and install Docker:
sudo apt updatesudo apt install docker-ce
Installation Steps:
Once Docker is installed, you can start and enable the Docker service with the following commands:
sudo systemctl start dockersudo systemctl enable docker
To verify that Docker has been successfully installed, you can run the following command to check the Docker version:
docker --version
Basic Docker Commands:
docker pull <image_name>: Download a Docker image from a repositorydocker run <image_name>>: Create and start a new container based on an imagedocker ps: List all running containersdocker images: List all downloaded imagesdocker stop <container_id>: Stop a running container
With this guide, you are now equipped to install Docker on your Linux system and start working with containers for your software development and deployment needs. Docker simplifies the process of managing applications and their dependencies, making it a valuable tool for IT professionals and Linux enthusiasts alike.
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